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tan^-1((sqrt(1-x^2)-sqrt(1+x^2))/(sqrt(1...

`tan^-1((sqrt(1-x^2)-sqrt(1+x^2))/(sqrt(1+x^2)+sqrt(1-x^2)))=alpha` તો `x^2` =___________`|x|<1,x!=0`

A

`cos 2 alpha`

B

`sin 2 alpha`

C

`tan 2 alpha `

D

`cot 2 alpha `

Text Solution

Verified by Experts

The correct Answer is:
B
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